Risultati scientifici

Phase measurements without interferometry: 2D transverse phase detection by numerical beam intensity analysis

Anno: 1999

Autori: Chessa P., Galimberti M., Barbini A., Danson CN., Giulietti A., Giulietti D., Gizzi LA.

Affiliazione autori: Ecole Polytech, LOA ENSTA, F-91128 Palaiseau, France;
CNR, Ist Fis Atom & Mol, I-56127 Pisa, Italy;
Rutherford Appleton Lab, CLF, Didcot OX11 0QX, Oxon England;
Univ Pisa, Dipartimento Fis, I-56100 Pisa, Italy

Abstract: A whole family of laser-plasma interaction experiments is based on the phase analysis of the laser pulse after the propagation in a plasma. Typically, this phase is obtained by means of interferometry. As pulsed interferometry is a much more difficult task than taking simple images of the beam, we developed a numerical code for extracting phase information from images. The technique, based on the algorithm of Gerchberg-Saxton, showed to be very effective in retrieving 2D phase distributions of simulated as well as real beams. The convergence of the algorithm is fast (some minutes on a personal computer). The electronic noise in real images is intrinsically discarded by the algorithm.

Giornale/Rivista: LASER AND PARTICLE BEAMS

Volume: 17 (4)      Da Pagina: 681  A: 692

Parole chiavi: retrieval; algorithms;
DOI: 10.1017/S0263034699174135

Citazioni: 2
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2021-09-19
Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)
Link per visualizzare la scheda su IsiWeb: Clicca qui
Link per visualizzare la citazioni su IsiWeb: Clicca qui

gdpr-image
This site uses cookies. If you decide to continue browsing we consider that you accept their use. For more information about cookies and how to delete them please read our Info Policy on cookies use.
Read more